Lock.



M KJQLVZZZ H. G. VOIGHT.

LOOK.

APPLICATION FILED .num'l, 1912.

1, 1 O5, 1 67, Patented July 28, 1914.

2 SHEETS-SHEET 1.

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5 24 INVENTOR.

[f 6: I OIGHT milwikm A TTORNEYJ WITNESSES:

THE NORRIS PETERS CO., PHOTO-LITHO.. WASHINGTON, D. C

' Fig. 5 is a side elevation and plan view of UN ED STATES FFICE,

HENRY epvorencr, or New BRITAIN, oomvno'rron'r, AssIo voR TO THE AMERICAN HARDWARE CORPORATION, or NEW BRITAIN, CONNECTICUT, Aoonronarron or CONNECTICUT.

To all whom it may concern:

Be it known that I, HENRY G. VOIGHT a citizen of the United States, residing at New Britain, county of Hartford,--State or Connecticut, have invented certain new and useful Improvements in Locks, of which the following is tion.

My invention relates to looks for operating electric switches located in doorjambs, and has for its objectto provide a lock having a two-part bolt, onepart of which constitutes the dead bolt and embraces the other, so that when both parts are thrown it will have the appearance of a single part bolt, except for the dividing line, and further has for its object to provide mechanism whereby the dead bolt portion of the twopart bolt can be operated from the inside of the door independently of the inner or auxiliary portion of said bolt, and'whereby both portions can be simultaneously thrown into locking the door.

The following is a description'ofan embodiment of my invention, reference being had to the accompanying drawings, in which Figure 1 shows a lock embodying my in vention, "with the face plateremoved, and both parts of the bolt in retracted position. Fig. 2 shows the lower portion of this look with the face plate removed and both portions of the bolt thrown into locking posi tion. Fig. 3 shows a similar portion of the a full, clear, and exact descriplock with the dead bolt portion of the bolt thrown into locking'position and the inner portion in retracted position. Fig.4; is a detail of the connecting bar by which one tumbler is lifted from theinside ofthe door.

the auxiliary bolt tumbler. Fig. 6 is a side elevation and plan view of the dead lock bolt tumbler. Fig. 7 is an end view of the dead bolt. Fig. 8 is a side elevation of the same. Fig. 9 is a plan view of the samef Fig. 10 shows, in side elevation and plan view, the inner or auxiliary bolt. Fig. 11- shows an end view of a modification of thedead lock and auxiliary bolts. i

Refe ring more particularly to the drawings, 1 is an electric switch having a normally extendeda. actuating pushebutton 2, placed behind the strike plate 3 in the j amb ofthe door.

4cis the lock casing having the front plate I Specification of Letters Patent.v I

position from the outside of.

, Patented July 28, 1914. Applicationfiled Jannary27,1912. S eria1No. 673,8 72. A

5. plate is provided with an o-pen-' ing for a deadbolt 6, said dead bolt having j in its head. an opening 7 which, when this i 7 bolt alone is thrown to outward position,

embraces the push-button 2 of theelectric provided with projections 8 and 8, forming a notch whereby the bolt isactuated byarms i 9 ofa thumb-turn hub 10 from' the inner "side of a door! These arm's?) also engage a spring actuated lifting plate 10, which ao i tuates aflbar'llxembracing a projection 12 on .11 tumbler 13 pivoted to the case on the pin 14- and normally held in depressed posi tion by the "spring 15. This tumbler has a other of a projection 17 carried bv the bolt notch 21, which, when both bolts are thrown .to retracted position, registers with" a notch 22 in the bolt 6. Pivoted upon the pin 14 is a second spring actuated locking tumbler 23 having a projection 24,which engages one side or the other of a the auxiliary bolt 19.

When the 'bolts are both thrown to re tracted orunlocking position, asin Fig. 1,;

projection 25 on and the key is inserted th ro-ugh the keyhole l 26 and turned counterclockwise, the key lifts f I both of the tumblers13 and 23, so that the 9oproje'ctions16and 24 are disengaged respectively from theprojectionsfl27 and 25,

. whereupon a continued movement the key engaging the notches 21 and 22 throws both bolts outward into ithe Ipositionshown in Fig.21 A reversemovement of the key acts in a similar manner to. lift 'the dog's 13 and'il 23 and throw both bolts inward to unlocked position. It will, 'ythere'fore, be se'enthat when the-key is used to lock the door, both bolts are thrown. outward and theApushQbUtton "2 ismovedjfrom the position shown in Fig. lto the position shownin'Fig. 2. If, j

however-{with theparts' 'in the. position";

shown in-Fig.1, the thumb-turn hub ldis turned clockwise; the first movemenuis'f on one ofthe'arms 9 to lift-the plate "1O ,-th-us lifting the bar 11 and lifting the single tumbler 13, so that the projection '16will be disengaged from the projection 17. Acontinued movement of the thumb-turn hub then causes the other arm 9 to engage the switch. The tail end of this dead boltis" projection 16 which engages one side or the shoulder 8 and move the dead bolt 6 into locking position, as shown in Fig. 3, the inner or auxiliary bolt 19 being restrained from movement by the projection 24; of the dog 23, said dog engaging the projection 25- of thefbolt 19. It will thus be seen that when the lock is actuated by the thumb-turn hub 10, the dead bolt 6 alone is thrown, the inner or auxiliary bolt 19 being held in retracted position, with the result that when the door is locked by turning the thumb-turn hub 10, the push-button 2 of the electric switch is not acted upon,'but remains in extended position. A reversemovement of the thumb-turn hub 1O acts in a similar mannor to lift the tumbler 13 and to retract the dead bolt, so that the parts are restored to the position shown in Fig. 1. By this means, 1 provide a lock having a two part bolt, the dead bolt portion of'which is actuated from both the outside and inside, while both the thumb-turn hub, because the projection 24.

will hold the bolt 19 against retraction. The flange 19 on the bolt 19 prevents the retraction of the bolt 6 when the bolt 19 is not retracted. Whenever the door is locked from the inside, the rear end of the inner bolt 19 will prevent the guests key inserted from the outside, from turning in either direction so as to lift the dog 13 or dog 23 and retract the bolt 6. This bolt 6, however, when thrown by the thumb turn can beretracted from'the outside by a suitable master key.

I prefer to construct the dead bolt 6 with the outer or head .portion formed as shown in Fig. 7, so as to completely surround the outer or head portion of the auxiliary bolt 19. It is obvious, however, that any of the advantages of my invention can be obtained if the dead and auxiliary bolts have their "heads formed as shown in Fig. 11, that is, if the dead bolt has a U-shaped head 6 and the auxiliary bolt has a head 19 fillingthe space within the arms of the U. With this arrangement the dead bolt which is relied upon to make engagement with the strikeplate whenthe :door is locked from either the outside or the inside, fills the hole in the strike-plate, while the inner or auxiliary Q bolt being thrownwhen the lock is actuated from .the outside, actuates the push-button Copies of this pa tentmay be obtained for 2 at that time, and does not actuate it when the lock is actuated from the inside. 27 is the ordinary knob actuated latch.

WVhile the embodiment shown and described is the preferred embodiment, my invention, as will be evident to those skilled in the art, permits of various modifications without departing from the spirit thereof or the scope of the appended claims.

What I claim is:

1. In a lock, the combination of a dead bolt and a secondary bolt, the head of the dead bolt embracing the head of the second ary bolt at the top and both sides thereof, with means for throwing both of said bolts outward and inward together, and means for independently throwing said dead bolt outward and inward, said two means being accessible from opposite sides of the .door respectively.

2. In a lock, the combination of adead bolt and a secondary bolt, the head of the dead bolt embracing the head of the secondary bolt, with means for throwing both of said bolts outward and inward together, and means for independently throwing said dead bolt outward and inward, said two means being accessible from opposite sides of the doorrespectively.

3. In a lock, the combination of a dead b'olt and a secondary bolt, the head of the dead bolt completely surrounding the head of the secondary bolt, with means for throwing both of said bolts outward and inward together, and means a for independently throwing said dead bolt outward and inward, said two means being accessible from opposite sides of the door respectively.

4. In a lock, the combination of a dead bolt and a secondary bolt, the head of the dead bolt completely surrounding the head I of the secondary bolt, with means for throwing both of said bolts outward and inward together, and means for independently throwing said dead bolt outward and inward, said two means being accessible from opposite sides of the door'respectively.

5. The combination of a dead bolt and an auxiliary-bolt, the head of the dead bolt embracing the head of the auxiliary .bolt, with a key for throwing both of said bolts outward and inward together, and a thumb-turn hub for independently throwing said dead bolt outward and inward, said key and thumb-turn hub being operable from opposite sides of the door respectively.

HENRY G. VOIGHT. lVitnesses:

GWENDOLINE A. JACKSON, M. S. WIA-RD.

five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

